| 摘要 |
For use with a protection circuit having an in-rush current control element that controls in-rush current into a power converter, a control circuit, a method of controlling the in-rush current control element and a power supply employing the control circuit and method are provided. In one embodiment, the control circuit includes: (1) a sensor, coupled to the in-rush current control element, that senses an in-rush current through the in-rush current control element and produces an intermediate signal and (2) a controller, coupled to the sensor and the in-rush current control element, that controls the in-rush current control element to limit the in-rush current when the intermediate signal exceeds a first reference current signal and to substantially interrupt the in-rush current when the intermediate signal exceeds a second reference current signal.
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